mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-13 05:54:23 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
122 lines
2.6 KiB
C
122 lines
2.6 KiB
C
/*
|
|
* linux/fs/hfs/attr.c
|
|
*
|
|
* (C) 2003 Ardis Technologies <roman@ardistech.com>
|
|
*
|
|
* Export hfs data via xattr
|
|
*/
|
|
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/xattr.h>
|
|
|
|
#include "hfs_fs.h"
|
|
#include "btree.h"
|
|
|
|
int hfs_setxattr(struct dentry *dentry, const char *name,
|
|
const void *value, size_t size, int flags)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
struct hfs_find_data fd;
|
|
hfs_cat_rec rec;
|
|
struct hfs_cat_file *file;
|
|
int res;
|
|
|
|
if (!S_ISREG(inode->i_mode) || HFS_IS_RSRC(inode))
|
|
return -EOPNOTSUPP;
|
|
|
|
res = hfs_find_init(HFS_SB(inode->i_sb)->cat_tree, &fd);
|
|
if (res)
|
|
return res;
|
|
fd.search_key->cat = HFS_I(inode)->cat_key;
|
|
res = hfs_brec_find(&fd);
|
|
if (res)
|
|
goto out;
|
|
hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
|
|
sizeof(struct hfs_cat_file));
|
|
file = &rec.file;
|
|
|
|
if (!strcmp(name, "hfs.type")) {
|
|
if (size == 4)
|
|
memcpy(&file->UsrWds.fdType, value, 4);
|
|
else
|
|
res = -ERANGE;
|
|
} else if (!strcmp(name, "hfs.creator")) {
|
|
if (size == 4)
|
|
memcpy(&file->UsrWds.fdCreator, value, 4);
|
|
else
|
|
res = -ERANGE;
|
|
} else
|
|
res = -EOPNOTSUPP;
|
|
if (!res)
|
|
hfs_bnode_write(fd.bnode, &rec, fd.entryoffset,
|
|
sizeof(struct hfs_cat_file));
|
|
out:
|
|
hfs_find_exit(&fd);
|
|
return res;
|
|
}
|
|
|
|
ssize_t hfs_getxattr(struct dentry *dentry, const char *name,
|
|
void *value, size_t size)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
struct hfs_find_data fd;
|
|
hfs_cat_rec rec;
|
|
struct hfs_cat_file *file;
|
|
ssize_t res = 0;
|
|
|
|
if (!S_ISREG(inode->i_mode) || HFS_IS_RSRC(inode))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (size) {
|
|
res = hfs_find_init(HFS_SB(inode->i_sb)->cat_tree, &fd);
|
|
if (res)
|
|
return res;
|
|
fd.search_key->cat = HFS_I(inode)->cat_key;
|
|
res = hfs_brec_find(&fd);
|
|
if (res)
|
|
goto out;
|
|
hfs_bnode_read(fd.bnode, &rec, fd.entryoffset,
|
|
sizeof(struct hfs_cat_file));
|
|
}
|
|
file = &rec.file;
|
|
|
|
if (!strcmp(name, "hfs.type")) {
|
|
if (size >= 4) {
|
|
memcpy(value, &file->UsrWds.fdType, 4);
|
|
res = 4;
|
|
} else
|
|
res = size ? -ERANGE : 4;
|
|
} else if (!strcmp(name, "hfs.creator")) {
|
|
if (size >= 4) {
|
|
memcpy(value, &file->UsrWds.fdCreator, 4);
|
|
res = 4;
|
|
} else
|
|
res = size ? -ERANGE : 4;
|
|
} else
|
|
res = -ENODATA;
|
|
out:
|
|
if (size)
|
|
hfs_find_exit(&fd);
|
|
return res;
|
|
}
|
|
|
|
#define HFS_ATTRLIST_SIZE (sizeof("hfs.creator")+sizeof("hfs.type"))
|
|
|
|
ssize_t hfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
|
|
if (!S_ISREG(inode->i_mode) || HFS_IS_RSRC(inode))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!buffer || !size)
|
|
return HFS_ATTRLIST_SIZE;
|
|
if (size < HFS_ATTRLIST_SIZE)
|
|
return -ERANGE;
|
|
strcpy(buffer, "hfs.type");
|
|
strcpy(buffer + sizeof("hfs.type"), "hfs.creator");
|
|
|
|
return HFS_ATTRLIST_SIZE;
|
|
}
|